Wow, I didn't even think Zwei was that hard to come by. I own a copy of the NTSC-U/C version, and it came with my Saturn when I got it. Absolutely beautiful game, any idea how they did the water in Stage 4? Anyway, if you're using an emu and don't have to worry about region troubles, Ice, you might as well get one of the NTSC versions since my guess is they're more available and better.
Usually the price/availability bitching is about PD Saga, heh.
No matter how many people I introduce to the miracle that is M1, there are always people who haven't heard of it. What worries me is how close to home some of the people are-- like on the MAME board and the M1 board... places where it's had plenty of advertising!